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authorGiridhar Malavali <giridhar.malavali@qlogic.com>2012-01-11 02:44:16 -0800
committerJames Bottomley <JBottomley@Parallels.com>2012-01-16 12:32:08 +0400
commite6bd0ebd4a8ba9118e970c0214e912e35895c92b (patch)
tree9d2283459f996e7e578699a80fca29e8854209ea /drivers/scsi/qla4xxx
parent4f77083ed0325ceb9cd5701c0f335583df3dded2 (diff)
[SCSI] qla4xxx: Disable generating pause frames in case of FW hung
In case of FW hung ISP82xx generates continuous pause frames which causes switch to disable port. Added fix to disable generating pause frames in case of FW hung Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/qla4xxx')
-rw-r--r--drivers/scsi/qla4xxx/ql4_mbx.c7
-rw-r--r--drivers/scsi/qla4xxx/ql4_nx.h3
-rw-r--r--drivers/scsi/qla4xxx/ql4_os.c10
3 files changed, 20 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index c2593782fbb..e1e66a45e4d 100644
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -219,6 +219,13 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
ha->mailbox_timeout_count++;
mbx_sts[0] = (-1);
set_bit(DPC_RESET_HA, &ha->dpc_flags);
+ if (is_qla8022(ha)) {
+ ql4_printk(KERN_INFO, ha,
+ "disabling pause transmit on port 0 & 1.\n");
+ qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
+ CRB_NIU_XG_PAUSE_CTL_P0 |
+ CRB_NIU_XG_PAUSE_CTL_P1);
+ }
goto mbox_exit;
}
diff --git a/drivers/scsi/qla4xxx/ql4_nx.h b/drivers/scsi/qla4xxx/ql4_nx.h
index cfb2f2edac3..dc45ac92369 100644
--- a/drivers/scsi/qla4xxx/ql4_nx.h
+++ b/drivers/scsi/qla4xxx/ql4_nx.h
@@ -39,6 +39,9 @@ enum {
QLA82XX_TEMP_PANIC /* Fatal error, hardware has shut down. */
};
+#define CRB_NIU_XG_PAUSE_CTL_P0 0x1
+#define CRB_NIU_XG_PAUSE_CTL_P1 0x8
+
#define QLA82XX_HW_H0_CH_HUB_ADR 0x05
#define QLA82XX_HW_H1_CH_HUB_ADR 0x0E
#define QLA82XX_HW_H2_CH_HUB_ADR 0x03
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 9d3eab51393..e2ef7762dc2 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -2080,6 +2080,11 @@ void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
if (qla4_8xxx_check_temp(ha)) {
+ ql4_printk(KERN_INFO, ha, "disabling pause"
+ " transmit on port 0 & 1.\n");
+ qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
+ CRB_NIU_XG_PAUSE_CTL_P0 |
+ CRB_NIU_XG_PAUSE_CTL_P1);
set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
qla4xxx_wake_dpc(ha);
} else if (dev_state == QLA82XX_DEV_NEED_RESET &&
@@ -2099,6 +2104,11 @@ void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
} else {
/* Check firmware health */
if (qla4_8xxx_check_fw_alive(ha)) {
+ ql4_printk(KERN_INFO, ha, "disabling pause"
+ " transmit on port 0 & 1.\n");
+ qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
+ CRB_NIU_XG_PAUSE_CTL_P0 |
+ CRB_NIU_XG_PAUSE_CTL_P1);
halt_status = qla4_8xxx_rd_32(ha,
QLA82XX_PEG_HALT_STATUS1);